There are things I like about OF3 (rearrange via drag & drop) and there are others I don‘t like or need (tasks need more space on the display, multiple tags - I just don‘t need them).

I could get used to it, but what I really struggle with is that OF3 seems to slow down the longer I use it.

If I rearrange tasks via drag & drop OF3 needs more and more time to display the changes. It‘s noticable after a couple of days without reboot of the App or the iPad. If it really get‘s worse d&d doesn‘t even seem to work at all. The dragged item jumps back to its previous position and I have to tap the clean-up icon to see the changes.

Items that become available stay greyed out or do not appear, again the clean-up button makes the changes visible.

OF3 at some time get‘s so slow, that keyboard shortcuts do not work anymore

Adding items to the inbox doesn‘t work anymore, using the little icon down on the right.

All those issues can be solved by killing the App and restarting it. But only temporarily.

Thanks CGHMartini for your hint. I‘ve set the preferences for immediate clean up. Furthermore it works quite well for some time after killing and rebooting the app without changing the settings.
I guess the best idea is to open an ticket with the support, as you suggested.

We’d love to get your experience filed as a bug report for the team! You can email omnifocus-ios@omnigroup.com, as Rose and Edi mentioned above. If you have the opportunity to include a screen recording that shows the issue, that would be very helpful. Otherwise, linking to this thread, and perhaps giving us some specific steps to follow to try to recreate the behavior on our end, would be appreciated. Thanks so much for your patience and willingness to communicate with us!

Is the App also working normal for a time after killing and restarting it?
Furthermore I‘d be good if you could file a report at omni so they get aware of it and see that several people are facing the problem.

As many other commenters earlier in this thread have mentioned, we would kindly ask you to submit bug reports to us via email. Our user forum is a great place for sharing questions and discussing workflows with our community, but if you’re having a problem with our software, the best way for us to investigate issues and provide technical assistance would be for you to send in your bug report via email. Our address is support@omnigroup.com, or you can use Help > Contact Omni from within any of our apps to provide feedback or bug reports.